View of the Enos Mills Cabin located on Colorado Highway7, 9 miles south of Estes Park, Larimer County, Colo. Built in 1885, the simple one-story cabin of chinked, notched logs has a framed cutout for the front door in its facade. The cabin in on the National Register. Enos Abijah Mills (1870-1922) was an American naturalist and homesteader. He was the main figure behind the creation of nearby Rocky Mountain National Park.